When I changed the metering rods from 60/52's to 58/50's the mileage went from 18 to 12. Albeit the quick trip I checked it on was only 6.2 miles up and 6.2 miles back and I passed a slow-poke on the way up.
That may have hurt it some.
You know the deal they were doing 50 in a 65 on a two lane road, I had to conduct a high speed fly-by.
And then starting out I had to floor it to get into traffic.
On second thought that whole run was completely different than the rest, too short ect.
I'll try again latter.